Abstract:
:The heart is challenged by a plethora of extracellular stimuli over the course of a normal day, each of which distinctly influences myocardial contractile function. It is therefore not surprising that myocardial metabolism also oscillates in a time-of-day dependent manner. What is becoming increasingly apparent is that the heart exhibits diurnal variations in its intrinsic properties, including responsiveness to extracellular stimuli. This article summarizes our current knowledge regarding the mechanism(s) mediating diurnal variations in myocardial metabolism. Particular attention is focused towards the intramyocardial circadian clock, a cell autonomous molecular mechanism that appears to regulate myocardial metabolism both directly (e.g. triglyceride and glycogen metabolism) and indirectly (through modulation of the responsiveness of the myocardium to workload, insulin, and fatty acids). In doing so, the circadian clock within the cardiomyocyte allows the heart to anticipate environmental stimuli (such as changes in workload, feeding status) prior to their onset. This synchronization between the myocardium and its environment is enhanced by regular feeding schedules. Conversely, loss of synchronization may occur through disruption of the circadian clock and/or diurnal variations in neurohumoral factors (as observed during diabetes mellitus). Here, we discuss the possibility that loss of synchronization between the heart and its environment predisposes the heart to metabolic maladaptation and subsequent myocardial contractile dysfunction.
journal_name
Cardiovasc Resjournal_title
Cardiovascular researchauthors
Bray MS,Young MEdoi
10.1093/cvr/cvn054subject
Has Abstractpub_date
2008-07-15 00:00:00pages
228-37issue
2eissn
0008-6363issn
1755-3245pii
cvn054journal_volume
79pub_type
杂志文章,评审abstract:AIMS:For the majority of congenital heart diseases (CHDs), the full complexity of the causative molecular network, which is driven by genetic, epigenetic, and environmental factors, is yet to be elucidated. Epigenetic alterations are suggested to play a pivotal role in modulating the phenotypic expression of CHDs and t...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/cvw195
更新日期:2016-10-01 00:00:00
abstract:OBJECTIVE:The aim was to clarify the roles of left atrial pressure and ventricular function in the determination of early diastolic filling. METHODS:Various grades of ventricular dysfunction were made in 12 mongrel dogs by coronary microembolization under pentobarbitone anaesthesia. Left atrial pressure was altered by...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/26.2.109
更新日期:1992-02-01 00:00:00
abstract:AIMS:To define the molecular mechanisms of cardiotoxicity induced by Sunitinib and to identify the role of biological sex in modulating toxicity. METHODS AND RESULTS:Exposure of isolated cardiomyocytes to plasma-relevant concentrations of Sunitinib and other tyrosine kinase inhibitors produces a broad spectrum of abno...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/cvv152
更新日期:2015-07-01 00:00:00
abstract:OBJECTIVES:Myostatin, a member of the transforming growth factor-beta (TGF-beta) family, plays a key role in skeletal muscle myogenesis by limiting hyperplastic and hypertrophic muscle growth. In cardiac muscle, myostatin has been shown to limit agonist-induced cardiac hypertrophic growth. However, its role in cardiac ...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/j.cardiores.2007.02.023
更新日期:2007-05-01 00:00:00
abstract:OBJECTIVE:Lower limb perfusion following arterial occlusion depends on the recruitment of collateral vessels. Blood flow through these collateral vessels may be jeopardized by hypersensitivity to vasoconstriction by serotonin (5-HT), as has been reported during hyperlipidemia and diabetes. Therefore the aim of this stu...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/s0008-6363(02)00538-2
更新日期:2002-11-01 00:00:00
abstract::The interest in mouse electrophysiology is expanding fast, despite the marked differences between mouse and man. Different methods have become available to analyse the electrical activity in the mouse heart in vivo. The mouse genome can be altered with relative ease, which allows the molecular dissection of the variou...
journal_title:Cardiovascular research
pub_type: 评论,杂志文章,评审
doi:10.1016/s0008-6363(99)00335-1
更新日期:2000-01-01 00:00:00
abstract:Aims:Circular RNA (circRNA) is a newly validated class of single-stranded RNA, ubiquitously expressed in mammalian tissues and possessing key functions including acting as microRNA sponges and as transcriptional regulators by binding to RNA-binding proteins. While independent studies confirm the expression of circRNA i...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/cvw250
更新日期:2017-03-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/cvr345
更新日期:2012-03-01 00:00:00
abstract:AIMS:Vascular endothelial growth factor-C (VEGF-C) has been shown to stimulate both angiogenesis and lymphangiogenesis in some but not all models where VEGF-C is over-expressed. Our aim was to investigate the interaction between lymphangiogenesis and angiogenesis in adult tissues regulated by VEGF-C and identify eviden...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/cvm094
更新日期:2008-05-01 00:00:00
abstract::Zero drift may be a cause of imprecision when micromanometer tipped catheters are used for intravascular pressure measurement over long periods of time. Drift of only a few mm Hg may represent a significant error when accurate recording of low vascular pressures is required. To overcome this problem a micromanometer t...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/23.2.152
更新日期:1989-02-01 00:00:00
abstract::Most of our knowledge about the modulation of platelet function by catecholamines is based on observations of acute in vitro actions. Little is known about the effects of chronically elevated or reduced adrenergic stimulation of the platelets. We therefore treated rats for 8 weeks with either adrenaline or the beta-bl...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/23.2.112
更新日期:1989-02-01 00:00:00
abstract:AIMS:We have demonstrated an important role of bone marrow-derived stem cells in preservation of myocardial function. We investigated whether Akt-1 of lin(-)c-kit(+) stem cells preserves ventricular function following myocardial infarction (MI). METHODS AND RESULTS:Isolated lin(-)c-kit(+) cells were conjugated with an...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/cvq110
更新日期:2010-09-01 00:00:00
abstract:OBJECTIVE:Macrophage migration inhibitory factor (MIF), which plays a pivotal role in the control of inflammatory responses, was first characterized as a T-cell cytokine, but later was also found as a pituitary peptide released in response to infection and stress. However, MIF's role and expression in the myocardium ha...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/s0008-6363(01)00408-4
更新日期:2001-12-01 00:00:00
abstract::Many observational studies and experimental and animal studies have demonstrated that estrogen therapy (ET) or hormone therapy (HT) significantly reduces the risk of coronary heart disease. Nonetheless, recent randomized controlled trials and the Nurses' Health Study in secondary prevention demonstrate trends toward a...
journal_title:Cardiovascular research
pub_type: 杂志文章,评审
doi:10.1016/j.cardiores.2005.12.004
更新日期:2006-04-01 00:00:00
abstract:AIMS:It has been reported that laminar shear flow (LF) improves barrier functions in vascular endothelial cells (ECs), whereas disturbed flow (DF) impairs the barrier. Our previous study showed that LF stimulus led to the activation of the cysteine protease, m-calpain, in ECs, which can influence RhoA activity. We hypo...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/cvp311
更新日期:2010-02-01 00:00:00
abstract::The central role of vascular endothelial growth factor (VEGF) in angiogenesis in health and disease makes it attractive both as a therapeutic target for anti-angiogenic drugs and as a pro-angiogenic cytokine for the treatment of ischaemic heart disease. While VEGF binds to two receptor protein tyrosine kinases, VEGFR1...
journal_title:Cardiovascular research
pub_type: 杂志文章,评审
doi:10.1016/s0008-6363(00)00268-6
更新日期:2001-02-16 00:00:00
abstract:OBJECTIVE:Evidence suggests important relationships among chronic inflammatory processes, endothelial dysfunction, hypertension and target organ damage. The present study examined the effects of chronic treatment with an anti-inflammatory p38 mitogen-activated protein kinase (MAPK) inhibitor (SB-239063AN) in the N(omeg...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/j.cardiores.2004.12.021
更新日期:2005-04-01 00:00:00
abstract::Chemokines, originally discovered as mediators of directional migration of immune cells to sites of inflammation and injury, have a function beyond their role in leukocyte chemotaxis. Indeed, they participate in organ development, angiogenesis, tumourigenesis and, more importantly, in the immune response. The chemokin...
journal_title:Cardiovascular research
pub_type: 杂志文章,评审
doi:10.1093/cvr/cvn029
更新日期:2008-05-01 00:00:00
abstract::The response of a simple systolic time interval, the interval between the Q wave and the onset of the aortic blood pressure pulse (the QA interval), to changes in cardiac contractility, cardiac loading, and heart rate was evaluated in anaesthetised open chest dogs. The QA interval was found to be sensitive to increase...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/20.6.444
更新日期:1986-06-01 00:00:00
abstract:OBJECTIVE:Sepsis-stimulated nitric oxide (NO) production impairs arteriolar responsiveness in skeletal muscle. Using wild type (WT), eNOS(-/-), iNOS(-/-) and nNOS(-/-) mice, we aimed to determine the key nitric oxide synthase (NOS) isoenzyme(s) responsible for the arteriolar hyporesponsiveness to acetylcholine (ACh) in...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/j.cardiores.2006.12.022
更新日期:2007-04-01 00:00:00
abstract:OBJECTIVE:Insulin seems to have vasodilator properties, but it is unclear if insulin in postprandial concentrations is a specific vasodilator of skeletal muscle resistance arterioles only or that various types of vessels are affected. The aim of the present study was to determine the direct effects and the time course ...
journal_title:Cardiovascular research
pub_type: 临床试验,杂志文章
doi:10.1016/s0008-6363(97)00035-7
更新日期:1997-04-01 00:00:00
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journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/s0008-6363(02)00447-9
更新日期:2002-09-01 00:00:00
abstract:AIMS:Extracellular nucleotides are vasoactive molecules. The concentrations of these molecules are regulated by ectonucleotidases. In this study, we investigated the role of the blood vessel ectonucleotidase NTPDase1, in the vasoconstrictor effect of nucleotides using Entpd1(-/-) mice. METHODS AND RESULTS:Immunofluore...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/cvp265
更新日期:2010-01-01 00:00:00
abstract:BACKGROUND:A recent genome-wide association study identified a susceptibility locus for atrial fibrillation at the KCNN3 gene. Since the KCNN3 gene encodes for a small conductance calcium-activated potassium channel, we hypothesized that overexpression of the SK3 channel increases susceptibility to cardiac arrhythmias....
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/cvt269
更新日期:2014-02-01 00:00:00
abstract:OBJECTIVE:After-depolarization associated arrhythmias are frequently observed in heart failure and associated with spontaneous calcium release from sarcoplasmic reticulum (SR), calcium after-transients. We hypothesize that disturbed SR calcium handling underlies calcium after-transients in heart failure (HF). METHODS:...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/s0008-6363(02)00854-4
更新日期:2003-04-01 00:00:00
abstract:AIMS:Thromboxane A2 (TXA2) induces platelet adhesion through thromboxane prostanoid (TP) receptor. Platelets contain many pro-angiogenic factors and are recruited to the site of vascular injury. However, the cellular and molecular mechanisms of platelet-dependent angiogenesis, especially the involvement of TP signallin...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/cvv139
更新日期:2015-09-01 00:00:00
abstract:AIMS:Angiotensin II is a potential contributor to the development of abdominal aortic aneurysm (AAA). In aortic vascular smooth muscle cells, exposure to angiotensin II induces mitochondrial fission via dynamin-related protein 1 (Drp1). However, pathophysiological relevance of mitochondrial morphology in angiotensin II...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/cvaa133
更新日期:2020-05-08 00:00:00
abstract:OBJECTIVES:Pericardial effusion has long been associated with low voltage of the surface electrocardiogram and its clinical utility is well known. The cause of this reduced QRS voltage has usually been attributed to short circuiting of the impulses by the pericardial fluid, but its precise mechanism has not been clearl...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/27.6.1033
更新日期:1993-06-01 00:00:00
abstract:OBJECTIVE:R 75,231, a potent and specific nucleoside transport inhibitor, largely prevents cardiac damage and death in catecholamine challenged rabbits. The major biochemical effect of nucleoside transport inhibition in ischaemic and reperfused myocardium is a prolonged accumulation of adenosine. The cardioprotection b...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1093/cvr/27.1.111
更新日期:1993-01-01 00:00:00
abstract:OBJECTIVE:To assess the contribution of the Na, K pump current (I(p)) to the action potential duration (APD) and effective refractory period (ERP) in human atrial cells, and to investigate whether I(p) contributes to the changes in APD and ERP associated with chronic atrial fibrillation (AF). METHODS:Action potentials...
journal_title:Cardiovascular research
pub_type: 杂志文章
doi:10.1016/s0008-6363(03)00466-8
更新日期:2003-09-01 00:00:00